KFG has got to be taller than 5'8". Go back and look at the video, pause when needed, keeping in mind where they're located in relation to the camera. The Justice for KFG website height listed for KFG is 6'2"...that's gotta be about right. Maybe the height for John Doe is wrong?

This is from Willie Dennis' arrest report. I'm having a little trouble making out what his height is listed at, but there's your ruler right there

Now darkness comes; you don't know if the whales are coming. - Royce Gracie

If you want to determine how tall KFG is, take one of the frames where they are standing up straight and facing one another (ie right before the nut kick), measure (pixels or or with a ruler) both men, divide KFG's measurement by WD's and multiply by 69. That's KFG's estimated height in (real world) inches

Now darkness comes; you don't know if the whales are coming. - Royce Gracie